Environmental Engineering in CE

Coal mines drainage waste water (acidic in nature) results from the earth’s water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is_____.

  • A. Neutralised by alkali treatment
  • B. Left as such without any treatment
  • C. Diluted with fresh water to reduce its acidity
  • D. None of these
Answer: Option A.
Explanation: 

No answer description available for this question

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